STATEN ISLAND, N.Y. -- Turkish police are actively seeking a man caught on video selling the brown leather jacket worn by Sarai Sierra on the day the 33-year-old Staten Island mom was found beaten to death in Istanbul.

The man, only known as Ziya T., has already been linked to the murder scene through DNA tests, according to Turkish media reports.

On Thursday, authorities revealed that Ziya T. was caught on video tape at a secondhand bazaar in Eminonu selling the brown leather jacket that Ms. Sierra is pictured wearing in photos that have been circulated around the world, according to a report in the Turkish newspaper Hurriyet.

She was wearing the jacket on the day she disappeared, according to the report.

On Wednesday, Turkish media outlets reported that forensics
experts linked a hair sample collected from a pillow at the address of Ziya T., in the northwestern province of
Karabuk, to blood samples found on Mrs. Sierra's T-shirt and under her
nails.

New to the investigation is the revelation by police that Ms Sierra was beaten to death with a brick, not a rock, according to Turkish media reports.

Ziya T. was described by his relatives -- who aided authorities in collecting the DNA samples -- as "unstable,"according to the Daily Mail.

Various news reports say the suspect is still in Turkey but trying to flee to Syria,
which shares a border at the southeast corner of Turkey, about 750 miles
away from Karabuk.

Ziya T. also goes by the name "Laz Ziya," and makes a living
collecting used paper, according to reports. He was reportedly spotted
covered in mud, loitering about the ancient walls the day Mrs. Sierra
went missing.

Mrs. Sierra went to Istanbul to explore her photography hobby,
and made side trips to Amsterdam and to Munich, Germany. She was found beaten to
death in Istanbul more than a week after she was first reported
missing.

Mrs. Sierra was laid to rest on Friday, after a funeral service at Christian Pentecostal Church in Concord.